<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        *{
            margin: 0;
            padding: 0;
        }
        body{
            background-color: #ffa5a5;
        }
        .box{
            width: 500px;
            height: 500px;
            margin: 100px auto;
            position: relative;
            animation: box 0.7s ease infinite;
        }
        @keyframes box{
            0%{
                transform: scale(0.2);
            }
            100%{
                transform: scale(1.1);
            }
        }
        .left{
            width: 220px;
            height: 220px;
            position: absolute;
            border-radius: 100%;
            left: 71px;
            top: 53px;
            background: linear-gradient(-90deg, #F50A45 0%, #d5093c 40%);
            animation: left 0.7s ease infinite;
        }
        @keyframes left{
            0%{

            }
            100%{
                box-shadow: 0 0 40px #d5093c;
            }
        }
        .right{
            width: 220px;
            height: 220px;
            position: absolute;
            border-radius: 100%;
            left: 219px;
            top: 53px;
            background: linear-gradient(-90deg, #F50A45 0%, #d5093c 40%);
            animation: right 0.7s ease infinite;

        }

        @keyframes right{
            0%{

            }
            100%{
                box-shadow: 0 0 70px #d5093c;
            }
        }
        .bottom{
            width: 210px;
            height: 210px;
            position: absolute;
            left: 150px;
            top: 139px;
            transform: rotate(45deg);
            background: linear-gradient(318deg, #F50A45 0%, #d5093c 40%);
            animation: bottom 0.7s ease infinite;
        }
        @keyframes bottom{
            0%{}
            100%{
                box-shadow: 0 0 40px #d5093c;
            }
        }
    </style>
</head>
<body>
    <div class="box">
        <div class="left"></div>
        <div class="right"></div>
        <div class="bottom"></div>
    </div>
    <div class="box">
        <div class="left"></div>
        <div class="right"></div>
        <div class="bottom"></div>
    </div>
</body>
</html>